A solid-state drive is considerably faster than any regular hard-disk drive. It is because an HDD uses spinning disks, that can rotate only so fast and the more information is read and written, the sluggish and hotter they become, whereas an SDD employs modules of flash memory, hence there aren't any actually moving components. The access speeds for an SSD are significantly higher, which makes these drives the right solution any time speed is needed. This is the reason why SSDs are often employed for the Operating System on a desktop or notebook and for saving data that's accessed repeatedly on hosting servers. A large number of service providers also use a combination of the two drives, so they store the data on hard drives, but they use one or more solid-state drives to cache the more frequently used data and as a consequence, the data loads much quicker while the load on the HDDs is lowered because their disks have to spin less often in order to read and write.
SSD with Data Caching in Shared Hosting
The cloud platform where we make shared hosting accounts uses solely SSD drives, so your web apps and static sites will load very quickly. The SSDs are used for files, email addresses and databases, so no matter if you open a page or check for new messages with webmail, the content will load immediately. To ensure even higher speeds, we also use multiple dedicated SSDs that function only as cache. Any content which generates lots of traffic is copied on them automatically and is later on read from them and not from the primary storage drives. Of course, that content is replaced dynamically for much better performance. What we achieve this way in addition to the better speed is decreased overall load, thus decreased potential for hardware failures, and longer lifespan of the main drives, that is one more level of protection for any information that you upload to your account.
SSD with Data Caching in Semi-dedicated Servers
All semi-dedicated server accounts that we offer are made on a cloud platform that employs exclusively SSD drives. We do not use HDDs anymore, so your websites will load very fast as we use SSDs for every part of the service - files, databases and email addresses. As some customers may host sites that could be more popular than others, we also use many drives for caching. Our system identifies all of the content that is loaded more often and duplicates it on these drives so as to load it from them. This configuration is used for load-balancing purposes as we guarantee that several reading/writing intensive Internet sites will not affect the performance of the rest of the websites that are stored on the same primary drive. Using caching drives also increases the life-span of the main storage SSDs and lowers the possibility of disk failures.